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1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CONTENT_BROWSER_RENDERER_HOST_FRAME_MEMORY_MANAGER_H_ | |
6 #define CONTENT_BROWSER_RENDERER_HOST_FRAME_MEMORY_MANAGER_H_ | |
7 | |
8 #include <list> | |
9 #include <set> | |
10 | |
11 #include "base/basictypes.h" | |
12 | |
13 template <typename T> struct DefaultSingletonTraits; | |
14 | |
15 namespace content { | |
16 | |
17 class FrameContainer { | |
18 public: | |
19 virtual void ReleaseCurrentFrame() = 0; | |
20 }; | |
21 | |
22 class FrameMemoryManager { | |
23 public: | |
24 static FrameMemoryManager* GetInstance(); | |
25 | |
26 void AddFrame(FrameContainer*, bool visible); | |
27 void RemoveFrame(FrameContainer*); | |
28 void SetFrameVisibility(FrameContainer*, bool visible); | |
29 | |
30 private: | |
31 FrameMemoryManager(); | |
32 ~FrameMemoryManager(); | |
33 void CullHiddenFrames(); | |
34 friend struct DefaultSingletonTraits<FrameMemoryManager>; | |
35 | |
36 std::set<FrameContainer*> visible_frames_; | |
37 std::list<FrameContainer*> hidden_frames_; | |
38 | |
39 DISALLOW_COPY_AND_ASSIGN(FrameMemoryManager); | |
40 }; | |
41 | |
42 } // namespace content | |
43 | |
44 #endif // CONTENT_BROWSER_RENDERER_HOST_FRAME_MEMORY_MANAGER_H_ | |
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